But the real numbers are likely to be higher as the NHS does not gather date on girls who have the procedure done at private practices.

What is normal for one woman can be completely different to what is normal for another, from your pubic hair to your clitoris and your labia, the Royal College of Obstetricians and Gynaecologists (RCOG) revealed in their new booklet.

RCOG / BSPAG

Each different part of the genitalia looks different from woman to woman

A labiaplasty reduces the size of the labia minora – the flaps of skin either side of the vaginal opening.

The cosmetic op can be carried out with either a local or general anaesthetic and can take around two hours, with some patients being able to go home on the same day.

That's something the RCOG, along with young people's sexual health charity Brook, aims to change with their booklet So What Is a Vulva Anyway?

It assures worried youngsters that "variation is endless" and adds they shouldn't be concerned if they look different to the women they see in porn films.

Dr Naomi Crouch, a consultant gynaecologist and spokeswoman for the RCOG, said: "There is absolutely no scientific evidence to support the practice of labiaplasty and the risk of harm is significant, particularly for teenagers who are still in stages of development both physically and psychologically.

The booklet talks through what each different part of the female genitalia should look like

"We hope this resource will provide information for girls and young women that their vulva is unique and will change throughout their life, and that this is entirely normal and healthy."

Louise Williams, co-lead of the project and a clinical nurse specialist at University College Hospital, added: "We see many patients in our paediatric and adolescent gynaecology clinic who have a poor understanding of the function of parts of the anatomy and also of normal genital variation.

"This educational resource will help young people to understand their vulva and how it develops during puberty, particularly if they are worried about how they look or feel.

"We hope it will reassure young people that vulvas come in a variety of shapes and sizes, and if they need advice and support, they can know where to go."

RCOG / BSPAG

The vulva refers to the outside of your genitals, including your clitoris and labia

So what IS a vulva anyway?

The vulva is the outside of your genitals, including your clitoris and labia - which have inner and outer lips.

Your vagina does not refer to the entire genital area, just the muscular tube leading up to the cervix.

You might be basing your knowledge of a "normal vulva" on what you have seen in porn, with many of the women having no hair and tiny labia.

But the booklet warns these images have been photo-shopped to look a certain way, so are not a realistic image of what is normal down there.

RCOG / BSPAG

The shape and size of a clitoris varies from woman to woman

Get clued up on the clitoris

As with vulvas, these vary from person to person too.

In most women you can see the clitoral hood and the tip, but it will look different from woman to woman.

It also varies in size and can become bigger when you are turned on as blood rushes to the area.

Where pubic hair grows and how big the labia is can vary for each different woman

Learn about your labia

Your labia is the outer and inner lips surrounding your vagina.

The outer lips, called the labia majora, have pubic hair growing on the sides.

The labia minora, or inner lips, are softer and don't have hair.

They can also vary in size and shape - they can be bigger than the outer ones, be straight or wavy, the skin can be smooth or bumpy.

One can even be longer than the other.

All of this is completely normal and nothing to worry about.

The colour, length, thickness and where pubic hair grows also varies from woman to woman

Get in the know about grooming

By now you've probably guessed a recurring theme - pubic hair varies from person to person.

Some women may have thicky, dark, curly hair while others may have light, straight, wispier hair.

The hair is there to protect your vulva and vagina by acting as a natural barrier for dirt and bacteria.

It varies in colour, thickness and length.

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Where is grows also varies from woman to woman.

Some women will have pubic hair on their mons pubis - the soft padding above their pubic bone - their outer labia, thighs, tummy and around their bum.

Others may only have hair in some of those places.

Woman, 23, born with no womb and most of her vagina MISSING still enjoys sex

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